| 摘要 |
A magnet for magnetic resonance imaging comprising a pair of poles (7) supported on a yoke and juxtaposed to define between them an imaging volume (5), the poles (7) having opposed end faces (11) which each include shim pieces set therein, which shim pieces (12,13) are adapted and arranged to be positionally adjustable in directions (14) parallel with the longitudinal axis of the poles for the purpose of homogenising the magnetic field in the imaging volume. <IMAGE> |
